ISO 2367-1972 天然和人造冰晶石铝含量的测定8-羟基喹啉重量法

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【英文标准名称】:Cryolite(naturalandartificial);Determinationofaluminiumcontent;8-Hydroxyquinolinegravimetricmethod
【原文标准名称】:天然和人造冰晶石铝含量的测定8-羟基喹啉重量法
【标准号】:ISO2367-1972
【标准状态】:现行
【国别】:国际
【发布日期】:1972-12
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC47
【标准类型】:()
【标准水平】:()
【中文主题词】:冰晶石;铝矿;含量测定;化学分析;重量分析;化学分析和试验;铝;金属矿
【英文主题词】:Aluminium;Aluminiumores;Chemicalanalysisandtesting;Cryolite;Determinationofcontent;Gravimetricanalysis;Metalliferousminerals
【摘要】:ThemethodcanbeappliedprovidedtheFe203contentdoesnotexceed0,15.ItcanalsobeappliedtoproductswithmolarratioofNaFtoAlF3betweenapproximately3and1,7.Theprincipleconsistsindissolutionofatestportionbyacidfusionusingpotassiumpyrosulphateandrecoverybyhydrochloricacid.Separationofthemixturebyprecipitationofaluminium,withammoniumbenzoate,inanaceticreducingmedium.Dissolutionoftheprecipitateandreprecipitationasaluminiumtri(quinolin-8-oxide)inanaceticbuffermedium.Filtration,washing,dryingoftheprecipitateatatemperatureof130鳦andweighing.
【中国标准分类号】:D59
【国际标准分类号】:73_060_40
【页数】:3P.;A4
【正文语种】:英语


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【英文标准名称】:Hexagonflangebolts
【原文标准名称】:带凸缘的六角头螺栓
【标准号】:DIN6921-1983
【标准状态】:作废
【国别】:德国
【发布日期】:1983-06
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:法兰;螺钉;紧固件;ISO微型螺纹;尺寸;ISO米制螺纹;六角头紧固件
【英文主题词】:fasteners;screws(bolts);dimensions;isominiaturescrewthreads;isometricthreads;screws;flanges;hexagonal-headfasteners
【摘要】:
【中国标准分类号】:J13
【国际标准分类号】:3920
【页数】:6P;A4
【正文语种】:德语


【英文标准名称】:TestMethodforFlashPointbyContinuouslyClosedCup(CCCFP)Tester
【原文标准名称】:用连续闭杯(CCCFP)试验器测定闪点的试验方法
【标准号】:ANSI/ASTMD6450-2005
【标准状态】:作废
【国别】:美国
【发布日期】:2005
【实施或试行日期】:2005-05-01
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:石油工业;闪点;试验方法
【英文主题词】:Flammability;Flashpoint;Oilindustries;Testmethods
【摘要】:Thisflashpointtestmethodisadynamicmethodanddependsondefiniteratesoftemperatureincrease.Itisoneofthemanyflashpointtestmethodsavailable,andeveryflashpointtestmethod,includingthisone,isanempiricalmethod.Note1Flashpointvaluesarenotaconstantphysical-chemicalpropertyofmaterialstested.Theyareafunctionoftheapparatusdesign,theconditionoftheapparatusused,andtheoperationalprocedurecarriedout.Flashpointcanthereforeonlybedefinedintermsofastandardtestmethod,andnogeneralvalidcorrelationcanbeguaranteedbetweenresultsobtainedbydifferenttestmethodsorwithtestapparatusdifferentfromthatspecified.Thistestmethodcoversthedeterminationoftheflashpointoffueloils,lubeoils,solvents,andotherliquidsbyacontinuouslyclosedcuptester.Themeasurementismadeonatestspecimenof1mL.Thistestmethodutilizesaclosedbutunsealedcupwithairinjectedintothetestchamber.Thistestmethodissuitablefortestingsampleswithaflashpointfrom10to250C.Note2Flashpointdeterminationsbelow10?Candabove250?Ccanbeperformed;however,theprecisionhasnotbeendeterminedbelowandabovethesetemperatures.Iftheuser'sspecificationrequiresadefinedflashpointmethodotherthanthistestmethod,neitherthistestmethodnoranyothermethodshouldbesubstitutedfortheprescribedmethodwithoutobtainingcomparativedataandanagreementfromthespecifier.ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.TemperaturesareindegreeCelsius,andpressureisinkilo-pascals.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Specificwarningstatementsappearthroughoutthestandard.
【中国标准分类号】:E30
【国际标准分类号】:75_080
【页数】:
【正文语种】:英语